/* ONCheck tanıtım sayfası (oncheck.anaomurga.com/, K51). Satır içi stil/betik yok. */
:root{
  --zemin:#f4f6fa;--yuzey:#fff;--cizgi:#e3e8ef;--yazi:#0f172a;--soluk:#64748b;
  --vurgu:#0c74f5;--vurgu2:#12c6f1;--koyu:#071a35;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --zemin:#0b1120;--yuzey:#111827;--cizgi:#1f2a3c;--yazi:#e5e9f0;--soluk:#94a3b8;
  color-scheme:dark;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--zemin);color:var(--yazi);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--vurgu)}
.ust,main,.alt{max-width:1040px;margin:0 auto;padding-left:16px;padding-right:16px}
.ust{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px}
.marka{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--yazi);font-weight:700;font-size:1.25rem}
.dugme{display:inline-block;padding:.75rem 1.25rem;border-radius:10px;background:linear-gradient(90deg,var(--vurgu),var(--vurgu2));color:#fff;font-weight:600;text-decoration:none}
.dugme:hover{filter:brightness(1.06)}
.dugme.ince{padding:.45rem .9rem;font-size:.92rem}
.dugme.ikincil{background:var(--yuzey);color:var(--yazi);border:1px solid var(--cizgi)}
.giris{padding:48px 0 32px;max-width:720px}
.giris h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;margin:0 0 16px;letter-spacing:-.02em}
.giris h1 span{background:linear-gradient(90deg,var(--vurgu),var(--vurgu2));-webkit-background-clip:text;background-clip:text;color:transparent}
.giris p{font-size:1.1rem;color:var(--soluk);margin:0 0 24px}
.eylem{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}
.giris .not{font-size:.9rem;margin:0}
.ozellikler{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;padding:24px 0}
.ozellikler article,.ekip{background:var(--yuzey);border:1px solid var(--cizgi);border-radius:14px;padding:20px}
.ozellikler h2,.ekip h2{font-size:1.05rem;margin:0 0 6px}
.ozellikler p,.ekip p{margin:0;color:var(--soluk)}
.ekip{margin:8px 0 32px}
.ekip small{font-size:.75rem;font-weight:600;color:#fff;background:var(--koyu);border-radius:6px;padding:2px 8px;margin-left:6px;vertical-align:middle}
.alt{padding-top:16px;padding-bottom:32px;border-top:1px solid var(--cizgi)}
.onekran-imza{display:inline-flex;align-items:center;gap:7px;font-size:13px;line-height:1;color:var(--soluk);opacity:.85;text-decoration:none}
.onekran-imza:hover{opacity:1}
.onekran-imza img{width:16px;height:16px;flex:none}
.onekran-imza b{font-weight:700;background:linear-gradient(90deg,#0c74f5,#12c6f1);-webkit-background-clip:text;background-clip:text;color:transparent}